Members of female punk rock band engage in a rowdy brawl with local hoodlums during their bar gig and spent the night at an auto repair shop with a kind passerby offering to fix their broken-down van. Upon waking up, they realize rather than getting their car fixed, they are in an arena made of junkyard cars and are mutated to be modern-day gladiators with mechanical parts replacing their limbs. Surrounded by blood-thirsty crowd and a local dictator named The Emperor, bloody battles ensue as they are thrown into the survival of their lives while they try to find the means to escape.

In 1986, three teens were brutally murdered after knocking on the door of 59 Oakwood Lane. The killer was never found. Over the next forty years, rumors turned to legend, and while few will admit to believing the stories, kids are still warned never knock on the door of 59 Oakwood Lane for fear of what may answer. On this Halloween night, Grace and her friends are going to wish they’d heeded the warnings and never knocked… for the Neverknock…